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At least in the United States, this year's trivalent vaccine includes a strain of H1N1. http://www.cdc.gov/flu/about/season/flu-season-2013-2014.htm#vaccine-pr
by Niten 13y ago
At least in the United States, this year's trivalent vaccine includes a strain of H1N1.
http://www.cdc.gov/flu/about/season/flu-season-2013-2014.htm#vaccine-protect http://www.cdc.gov/flu/about/season/flu-season-2013-2014.htm...